LA6597FMC

PS No.A2073-5/5

Application Circuit Examples

*1: When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to secure

the regenerative current route. Similarly, Cr (≥0.47µF) is necessary to enhance the reliability when there is no

capacitor near the fan power line.

*2: This IC performs linear drive by amplifying the Hall output and by voltage-controlling the coil.

The Hall element is biased by means of the bias from VCC with R1 and by means of the constant voltage (VHB =

1.5V) from the HB pin. As a result, stable Hall output is obtained even at high temperatures.

*3: Heat generated in IC is dissipated by inserting the resistor RM between VCC and VM, which enables the use of the

product in the environment with high ambient temperature. Recommended RMs is as follows:

RM = 1Ω/0.5W (Ioave = 0.25A or more)

RM = 2Ω/0.5W (Ioave = 0.25A or less)

*4: Keep this open when not using.

VCC

FG

OUT1

OUT2

GND

CT

IN+

IN-

H

HB

R1

Di

Cr

*1

*2

*4

VM

Element in the board

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